Bumper for automobiles



P. P. CRABILL AND J. TURNER.

BUMPER FOR AUTOMOBILES, APPLICATION FILED FEB. 3, 1921.

Patented Jan. 3, 1922.

. type.

channel form.

narrate ears-air PEARL 1?. CRABILL AND JAMES TURN R, 0F S?RINGFIELD, OHIO.

BUMPER FOR AU'EDMGBILES.

Specification of Letters Patent.

Patented an. 3, 1922;

Application filed Ilebrnary 3, 1931. Serial No. 442,242,

To all 10/10) it may concern.

Be it known that we, PEARL P. CnAnILL and James TURNER, citizens of the United States, residing at Sprin field, in the county of Clark and State of (Shio, have invented certain new and useful Improvements in' simple and effective devices for securely at taching a bumper to the frame of an automobile without the necesslty of altering the frame; a further obyect being to provide securing dei'ices which are universal in character in that they are applicable to both the rigid type of bumper and the spring bar and arm type, and are also capable of being readily attached to the majority of channel bar frames.

In the accompanying drawings:

Fig. 1 is a top plan view of a portion of the frame partly broken away showing a part of a bumper of the spring type attached thereto by our improved device.

Fig. 2 is also a top plan view of a similar nature, but showing a bumper of the rigid Fig. 3 is an enlarged section on the line 3-3 of Fig. 1.

Fig. 4 is an enlarged section on the line 4 4 of Fig. 2. I

Fig. 5 is an enlarged section on the line 5-5 of Fig. 1.

Fig. 6 is a section on a larger scale on the line 6-6 of Fig. 3.

Fig. 7 is a bottom planof the wedge.

, Fig. 8 is a bottom plan of the clamping member.

Referring to the drawings, 1 represents the vehicle frame, which is of the usual A clamping member 2 is provided with a recess, the upper wall 2 of which has a pair of finished faces 3 which may be fitted to the upper side of the lower flange 1 of the frame. The lower wall of the recess, which is in two parts 2, has finished faces 4-, formed at a inclination to the faces 3.

A second clamping member is shown at 5, the upper surface of which is formed with a straight face 5",: and the lower surface with an inclined face 5. This member, which is in the nature of a wedge, is inserted between the lowerface of the frame flange 1? and-- the inclined faces 4 of the clamping mem '80 co-operating her 2, with the straight face 5 adjacent the flange and the inclined face 5.? with the inclined faces 4.

The wedge 5 has at the outer end thereof an integral disk 6 whose outer face is formedwith serrations and to this serrated disk is clamped one of the arms of the bumper by the bolt 7. the head 7 of which occupies a recess 7 in the inner end of the clamping member 2, and whose end is threaded to receive a nut 8. The bolt passes through a perforation 9 in the member 2 and between the lower wall portions 2 thereof, and through a perforation 10 in the wedge disk,

the walls of the wedge portion being cut away, as indicated at 5, to accommodate the bolt. It will be noticed that thisrecess 5 extends into the bottom of the wedge, so that the bolt is allowed to project through the wedge and between the walls 2 of the member 2, on a line which intersects the plane of. those portions of the inclined surfaces 5*, which contact the faces 4, whereby the points of contact will lie within the transverse plane of the bolt, so that, when the bolt is tightened, the points of resistance are in planes substantially parallel to the longitudinal axis of the bolt. This construction further results in permitting the wedge to be of minimum thickness, thus resulting in a considerable saving in material.

In the form of bumper shown in Fig. 1, in which the arm 11 is shown-of spring material integrally formed with the bar 12, there is preferably employed a plate 13 of cast metal, the inner face of which is serrated and the outer face formed with top and bottom flanges 13 to enclose the edges of the arm 11, the plate bein perforated to receive the bolt and being inserted betweenthe arm and the disk 6 with its Serra cause the flange 1 of the frame to be so curely clamped between the wedge and wall 2, while the plate 13 and disk 6 will also be securely held together.

in the form of bumper shown in Fig. 2,the

arm 15 is of the rigid type, preferably cast, metal, to which the bar 16 is. ueldably secured in a well known manner. In this case,'the rear end of the arm is formed with a perforated disk-like portion 15, the inner face of which is serrated to co-operate with the serrations of the disk 6, thus enabling us to dis Jcnse with the plate 13.

lldaving thus described our invention, we claim 1. In a structure of the character described, a member recessed to receive a frame flange and having an inclined wall, a wedge in said recess between said flange and inclined wall, a buffer bar arm, and a bolt extending thro'ugh said parts to clamp the same together, said boltintersecting the planes of the contacting surfaces of said inclined wall and wedge,

2. In structure of the character de-- scribed, a member recessed to receive a frame flange'having an inclined wall, a wedge arranged between the flange and inclined wall, a buffer bar arm, a loose plate between the arm and wedge together with means thereon between one wall of the recess and the flange,

a buffer bar arm, said wedge having a serrated face, a part associated with said arm' also having a serrated face, and devices for ing said wedge into said recess to clamp the A flange of the frame and also for clamping the arm plate and wedge together with the serrated faces in juxtaposition.

5. In a structure of the character described, a member recessed to receive a frame flange and having an inclined wall,

a wedge in said recess between said flange and inclined wall, a buffer bar arm, and a bolt extending through said parts to clamp the same together, said wedge having a channel to receive said bolt which opensinto the bottom surface thereof, whereby the bolt intersects the planes of the contacting surfaces of said inclined wall and wedge.

in testimony whereof, we have hereunto set our hands this 22nd day of January,

. PEARL P. CRABILL.

JAMES TURNER, Witness:

CHAS; l. WnLcH. 

